Answer:
1.125moles
Explanation:
mass of NaOH,m= 45g
molar mass of NaOH, M= 23+16+1
= 40g/mol
mole,n =m/M
n= 45/40
n=1.125mole
Answer:
A noble gas configuration of an atom consists of the elemental symbol of the last noble gas prior to that atom, followed by the configuration of the remaining electrons. So for sodium we make the substitution of (Ne) for the 1s22s22p6 part of the configuration. Sodium's noble gas configuration becomes (Ne) 3s1.
A). Carbon enters the atmosphere as carbon dioxide from respiration and combustion.